A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Cl2(9)+2e + 2 C1¯(aq) =+1.359 V red N2(9)+4 H2O(1)+4e N2H4(aq)+4 OH (aq) E=-1.16 V red Answer the following questions about this cell. Write a balanced equation for the half-reaction that | happens at the cathode. Write a balanced equation for the half-reaction that U happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written.

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A chemist designs a galvanic cell that uses these two half-reactions:

\[
\begin{array}{|c|c|}
\hline
\textbf{half-reaction} & \textbf{standard reduction potential} \\ \hline
\text{Cl}_2(g) + 2e^- \rightarrow 2 \text{Cl}^-(aq) & E^\circ_{\text{red}} = +1.359 \, \text{V} \\ \hline
\text{N}_2(g) + 4 \text{H}_2\text{O}(l) + 4e^- \rightarrow \text{N}_2\text{H}_4(aq) + 4 \text{OH}^-(aq) & E^\circ_{\text{red}} = -1.16 \, \text{V} \\
\hline
\end{array}
\]

Answer the following questions about this cell.

1. **Write a balanced equation for the half-reaction that happens at the cathode.**

   \[
   \boxed{\text{Cl}_2(g) + 2e^- \rightarrow 2 \text{Cl}^-(aq)}
   \]

2. **Write a balanced equation for the half-reaction that happens at the anode.**

   \[
   \boxed{\text{N}_2\text{H}_4(aq) + 4 \text{OH}^-(aq) \rightarrow \text{N}_2(g) + 4 \text{H}_2\text{O}(l) + 4e^-}
   \]

3. **Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written.**

   \[
   \boxed{\text{Cl}_2(g) + \text{N}_2\text{H}_4(aq) \rightarrow 2 \text{Cl}^-(aq) + \text{N}_2(g) + 4 \text{H}_2\text{O}(l)}
   \]
Transcribed Image Text:A chemist designs a galvanic cell that uses these two half-reactions: \[ \begin{array}{|c|c|} \hline \textbf{half-reaction} & \textbf{standard reduction potential} \\ \hline \text{Cl}_2(g) + 2e^- \rightarrow 2 \text{Cl}^-(aq) & E^\circ_{\text{red}} = +1.359 \, \text{V} \\ \hline \text{N}_2(g) + 4 \text{H}_2\text{O}(l) + 4e^- \rightarrow \text{N}_2\text{H}_4(aq) + 4 \text{OH}^-(aq) & E^\circ_{\text{red}} = -1.16 \, \text{V} \\ \hline \end{array} \] Answer the following questions about this cell. 1. **Write a balanced equation for the half-reaction that happens at the cathode.** \[ \boxed{\text{Cl}_2(g) + 2e^- \rightarrow 2 \text{Cl}^-(aq)} \] 2. **Write a balanced equation for the half-reaction that happens at the anode.** \[ \boxed{\text{N}_2\text{H}_4(aq) + 4 \text{OH}^-(aq) \rightarrow \text{N}_2(g) + 4 \text{H}_2\text{O}(l) + 4e^-} \] 3. **Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written.** \[ \boxed{\text{Cl}_2(g) + \text{N}_2\text{H}_4(aq) \rightarrow 2 \text{Cl}^-(aq) + \text{N}_2(g) + 4 \text{H}_2\text{O}(l)} \]
**Title: Calculating Cell Voltage Under Standard Conditions**

**Section: Information Sufficiency**

**Question:**
Do you have enough information to calculate the cell voltage under standard conditions?

- ○ Yes
- ○ No

**Section: Calculation of Cell Voltage**

If you said it was possible to calculate the cell voltage, do so and enter your answer here. Be sure your answer has the correct number of significant digits.

**Input Box:**
\[ \square \, \text{V} \]

Ensure that your answer is precise and accounts for all necessary significant figures based on the information provided.
Transcribed Image Text:**Title: Calculating Cell Voltage Under Standard Conditions** **Section: Information Sufficiency** **Question:** Do you have enough information to calculate the cell voltage under standard conditions? - ○ Yes - ○ No **Section: Calculation of Cell Voltage** If you said it was possible to calculate the cell voltage, do so and enter your answer here. Be sure your answer has the correct number of significant digits. **Input Box:** \[ \square \, \text{V} \] Ensure that your answer is precise and accounts for all necessary significant figures based on the information provided.
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